Question

Need help on this page (geometry) PLEASE HELP!!!!!!!!

Answer 1

Explanation:

7.

72+89+99+2x+3x=(5-2)*180

260+5x=3*180

5x=540-260

5x=280

x=56°

8.

56+94+1.5x+x+4.5x=360

7x=360-150=210

x=30°

9.

x+9+x+120+156+145+90=(6-2)×180

2x=720-520

2x=200

x=100

10.

60+x+x+x+x=(5-2)×180

4x=540-60

4x=480

x=120°

11.

60+64+36+48+x+x=360

2x=360-208

2x=152

x=76°

12.

72+24+58+2x-6+86+x=(6-2)×180

3x=720-234=486

x=162°